Continental plates of crust of thinner lithosphere
And heavy oceanic plates above asthenosphere
Tectonic plates seem all to move and the continents to drift
And in valleys and the ocean floor the spreading causes rift.

The Mid-Atlantic Ridge is from divergent boundary plates
New crust forms and pulls apart where they separate
But volcanic vents called hot spots in New Zealand and Galapagos
Hawaii and in Iceland, and in Yellowstone

Tectonic plates converging, oceanic plate subducts
Under lighter continent—bends down then it melts
Pacific Rim’s a “ring of fire”: volcanoes and earthquakes
Convergent boundaries where you’ll find those subducting plates

Tectonic plates instead may move more from side to side
At a transform boundary, strike-slip fault; at lateral faults they slide
California’s San Andreas fault is where you’ll find
One of the examples of movement of this kind